665673350100 has 72 divisors (see below), whose sum is σ = 2101107166368. Its totient is φ = 161375356800.

The previous prime is 665673350093. The next prime is 665673350117. The reversal of 665673350100 is 1053376566.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100856299 + ... + 100862898.

Almost surely, 2^665673350100 is an apocalyptic number.

665673350100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

665673350100 is an abundant number, since it is smaller than the sum of its proper divisors (1435433816268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665673350100 is a wasteful number, since it uses less digits than its factorization.

665673350100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201719225 (or 201719218 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 42.

The spelling of 665673350100 in words is "six hundred sixty-five billion, six hundred seventy-three million, three hundred fifty thousand, one hundred".